Question 945405
The rate will be {{{ 6/8 = 3/4 }}} of the rate
with 8 taps open
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With 8 taps:
rate = ( 1 tank filled ) / ( 27 min )
With 6 taps:
{{{ ( 3/4 )*( 1/27 ) = 1/36 }}}
rate =  ( 1 tank ) / ( 36 min )
the remaining taps take 36 min to fill the tank